update supported node ver

Author: rzcoder

.travis.yml

@@ -1,6 +1,5 @@
 language: node_js
 node_js:
-  - '5.10'
   - '6.10.2'
   - 'stable'
 

README.md

@@ -27,7 +27,7 @@ console.log('decrypted: ', decrypted);
 ```shell
 npm install node-rsa
 ```
-> <sub>Requires nodejs >= 5.10
+> <sub>Requires nodejs >= 6.10
 
 ### Testing
 
@@ -238,7 +238,7 @@ Questions, comments, bug reports, and pull requests are all welcome.
 ## Changelog
 
 ### 1.0.0
-  * **Possible breaking changes** `new Buffer()` call as deprecated was replaced by `Buffer.from` & `Buffer.alloc`. As result dropped support for node version < 5.10.
+  * **Possible breaking changes** `new Buffer()` call as deprecated was replaced by `Buffer.from` & `Buffer.alloc`. As result dropped support for node version < 6.10.
 
 ### 0.4.2
  * `no padding` scheme will padded data with zeros on all environments.

package.json

@@ -32,10 +32,10 @@
   "devDependencies": {
     "chai": "^3.5.0",
     "grunt": "^1.0.1",
-    "grunt-contrib-jshint": "^1.0.0",
+    "grunt-contrib-jshint": "^1.1.0",
     "grunt-simple-mocha": "^0.4.1",
     "jit-grunt": "^0.10.0",
-    "lodash": "^4.13.1"
+    "lodash": "^4.17.4"
   },
   "dependencies": {
     "asn1": "0.2.3"